Cherry Valley SM2 parent stock flock consisted of 3 122 ducks of the same age was divided into four groups, which were forced to moult by two methods at 60 weeks and 66 weeks respectively.

• 将同批3122只肉用型樱桃谷父母代种鸭分4组,于60周龄和66周龄分别都采用2种方法进行强制换羽。